Wkeitch



T. s. KIZER.

SOCKET WRENCH. APPLICATIQN FILED SEPT- 3, 1920.

1,395,585. Patented Nov. 1, 1921.

r Be it known that I, THoMAs hereinafter.

UNITE. S A

PATENT OFFICE.

THOMAS S; KIZER, CHATTANOOG-A, OKLAHOMA.

' seeker- WRENCH.

T 0 all whom it may concern."

S. KIZER, citizen of the United States, residing 'at Chattanooga, in thecounty of Comanche and State of Oklahoma, have invented certain whereinthe wrench jaws may be readily 'positioned to accommodate differentsized nuts;

the jaws together. may be increased simply by increasing the forwardpressure against the jaws. I

And the invention has a still further object to provide a wrench whichwill be characterized by entire structural simplicity and which willprovide a rugged tool. V

v Other and incidental objects will appear In the drawings; j j

Figure 1 is a perspectiveyiew ofmy im proved wrench showing the jawsthereof p j I I Fig. 2 is a vertical sectional view showing the wrenchjaws retracted, this View more clearly bringing out the structuraldetails of the wrench,

Fig; 3 is a transverse section on the line 3-3 of Fig. 2, looking in thedirection of the arrows,

Fig. 4 is a perspective view showing-one of the wrench jaws in detail,and

Fig. 5 is a sectional View showing a slight modification of theinvention. V

In carrying the invention into effect, I employ a hollow wrench head 10enlarged toward its lower end and provided at its upper. end with asocket 11 for receiving a stock. Formed in the head to open'through thelower end thereof are oppositely disposed internal guide channels 12each substantially T-shaped in cross section and the bottom wallsofwhichprovide upwardlyin clined wedging shoulders 13. Slidable upon thewrenchhead are companion jaws, let.

These jaws are preferably provided" with angular serrated jaw faces 15and rlslng from the jaws are jaw shanks 16. The shanks 16 Specificationof Letters Patent.

A further object of the inv'ention is to provide a wrenchavherein thejaws may be wedged into engagement with anut and wherein the wedgingaction tending to draw Patented N 0v. 1, 1921.

Application filed September 3, 1920. "(serial no. 407,840.

are tapered longitudinally and are substantially T-shap'ed incross'section so as to slidably fit freely in the guide channel 12, the

outer SIClGS of said shanks defining upwardly inclined 'wedging' faces17 coacting with the shoulders 13 of the channels.

said grooves are looking pins 19 slidably connecting the jaws'with thewrench head. The' aws may, of course, be shaped to fit a square nutasshown in the drawing or may be shaped to fit a hexagonal nut, andformed in the jaw shanks at their inner ends are mating recesses 20adapted, when the jaws are fitted over a bolt to engage a nut thereon,to receive the projecting'end of the bolt.

-As will now belreadily understood in view of the preceding description,by simply holding 'the wrench head with its lower end presenteddownwardly, thejawsl will gravitate to projected position, the jawsbeing pro- H gressively spread 1n their downward movement. Consequentlythe jaws may then, as sugg'este'din Fig. 1, be readily engaged over anut, when'by pre ssingdownward upon the wrench head, the shoulders 13 ofthe head wilhact' against the faces 17 of the jaw shanks for forcing thejaws toward each other with a wedging action and binding the aws 1nengagement with the nut, the effect the nut and, as will be seen, thegrippingaction of the jaws may be increased by simply increasing theforward'thrust against the wrench head. As-will be noted, the

any inward pressure toward each other. As

willi be appreciated, this feature will be found of advantage when it isdesired to simply engage the jaws about a nut without gripping the nut,mutilation being thereby avoided. I accordingly provide a highlyeflective wrench structure and a socket wrench which is adapted for awide range of use.

a slight modification of In Fig. 5 of the drawin s, I have shown thismodification, a conical wrench head 21 is employed. Atits upper end thishead is provided with a socket 22 asin the pre-- ferred construction,and formed in the head are inwardly converging channels corresponding tothe channels 12. In these channels are mounted coacting jaws 23vslidably connected with the head by locking pins 24 corresponding to the1 his 19" ofthe preferred construction. T e jawsf23 are 25," This ringmay be moved upwardly upon the head so that the jaws maybe posltiojneddownwardly to-enga e 'a nut, when the ring" may" then be 'movedownwardly to'sur round the jaws, lockin the'jaws inengage ment with thenut; y iorci the ring downwardly over the j-aws,the jaw shanks mayiberelieved of any stress thereon tenda j aws'slidably connected ing' to,separate the jaws and when the" wrench is turned for rotating 'thenutthe ring will, Qf course, resist movement of the jaws away 'from eachother; from the upper end portion-ofthe head i's upward displacement.

a stop pin 26 for limiting the is claiihe' asnewfist Have-w thusdescribed the i nvlention, what" 1}. A"- wrench including "aheadjprov'ided with converging shoul rs and enacting having shankssubstantially triangular in e invention. In

head in the closed position of the jaws; F i ns r 1 slopingrexteriorwall, coacting jaws shda with the head and cross section and providedwith inclined faces coasting with saidshoulders whereby the jaws will beurged toward each other as the headis advanced upon the jaws,corresponding faces of the shanks abutting when the jaws are closed.

'2, A wrench including a head provided with guide channel'ssubstantially T-shaped in cross section, the bottom walls of saidchannels providing inclined shoulders," and- ,coactingja'ws havingshanks" substantially T-shaped' in section and slidabl'y fit- .tingf'insaid channels, the shank'sfhavin in:

with said shou ders dined face's coactin whereby the'jawsiwi be ured-toward each otherasthe head is'advance'd upon the jaws. 3. A wrenchincluding a head with inclined'shou'lders, and coacting jaws slidably'connected with thehead' and having jawshanks' rising'therefrom' andprovide with inclined faces "to coa'ctwith said shoulder's whereby thejaws will be urged toward each other as the head is advanced upon thejaws, the jaw shanks havingconfronting faces disposed toabut when thejaws are closedT-andtliejjaws bein formedwitlfflat faces at-thejunctionso the; shanks there provided of the'head to sustain forwardthrust of'the 4.- A wrench including"a head havinila y mounted uponthefhead and having sloping exterior walls conforming to the inclinationof the wall of the head, and a"lockin 'ring slidable upon said wall ofthe headandinovable to surround the. jaws enacting with the s10 ingwalls thereof;

n'tes'timon whereofTafli'x m signature.

T OMAS S. KIZE [nsL]

